The "Kolkata-class" refers to a class of guided-missile destroyers used by the Indian Navy. These ships are designed for multi-role operations, including anti-air, anti-surface, and anti-submarine warfare. They are equipped with advanced weaponry and sensors, enhancing their combat capabilities. The Kolkata-class destroyers are named after the city of Kolkata and include three ships: INS Kolkata, INS Kochi, and INS Chennai. They feature stealth technology, which reduces their radar signature, making them harder to detect. These destroyers play a crucial role in maintaining maritime security and power projection in the Indian Ocean region.